DMA transction size on T2081

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DMA transction size on T2081

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kk_1123
Contributor I

Hi,

We developed our custom board with T2081.

I'm using the DMA controller from internal T2081.

I'd like to make DMA transfer(Basic direct mode) from DDR3 memory to IFC bus.

Also I'd like to set the DMA transaction size to 256bytes: "Sub-256B Transfer".(See the attached.

It's the Page 1989 on QorIQ T2080 Reference Manual, Rev.3, 11/2016)

But I don't know how to set the parameter:"8B or 32B or 64B Aligned"(red mark on the attached).

Would you tell me how to set them?

And the appropriate T2081 internal registers,too?

Thank you.

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